How are rocks made pooped from sky or wut

Explain the difference between a physical change and chemical change

Which statement best describes the response by the united states and its allies to the berlin blockade? planes dropped tons of supplies around the city each day. trucks smuggled tons of supplies into berlin about once a week. tons of supplies were delivered to west berlin by boats. tons of supplies were purchased from east berlin each day.

Diarys letters and memoirs are good examples of what